| 超塑性形变中的晶界形态变化及再结晶的作用 |
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| 引用本文： | 许晓嫦,谭晓琼,谭玉华.超塑性形变中的晶界形态变化及再结晶的作用[J].材料科学与工艺,1999(4). |
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| 作者姓名： | 许晓嫦 谭晓琼 谭玉华 |
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| 作者单位： | 长沙铁道学院机械工程系!湖南长沙410075(许晓嫦)，湘谭精细化工厂!湖南湘潭411100(谭晓琼)，湘潭大学机械工程系!湖南湘潭411105(谭玉华) |
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| 摘 要： | 为了研究晶界形态及动态再结晶在超塑性形变中的作用，采用光学显微镜、扫描电镜、透射电镜，对硬铝ＬＹ１２ 的超塑性形变过程进行了观察、分析．提出金属材料的超塑性主要依靠晶界流态化区的粘性变形来实现，动态再结晶不是超塑性的一种机制．
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| 关 键 词： | 超塑性 粘性变形 动态再结晶 |
Change of grain boundary morphology and influence of recrystallization in superplastic deformation |
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| XU Xiao chang ,TAN Xiao qiong ,TAN Yu hua.Change of grain boundary morphology and influence of recrystallization in superplastic deformation[J].Materials Science and Technology,1999(4). |
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| Authors: | XU Xiao chang TAN Xiao qiong TAN Yu hua |
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| Affiliation: | XU Xiao chang 1,TAN Xiao qiong 2,TAN Yu hua 3 |
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| Abstract: | The change in grain boundary morphology and the influence of recrystallization in superplastic deformation were studied by observation and analysis of superplastic deformation of duralium LY12 by means of OPM, SEM and TEM. It is proposed to acquire the superplasticity of metallic materials through the viscous deformation of fluidized zone of grain boundary. Dynamic recrytallization is not a superplasticity mechanism. |
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| Keywords: | superplasticity vison deformation dynamic recrystallization |
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